CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands |
Total |
Common Stock |
Mandatory convertible preferred stock |
Common Stock |
Common Stock
Common Stock
|
Preferred Stock |
Preferred Stock
Mandatory convertible preferred stock
|
Treasury Stock |
Capital in Excess of Par Value |
Capital in Excess of Par Value
Common Stock
|
Capital in Excess of Par Value
Mandatory convertible preferred stock
|
Accumulated Deficit |
Accumulated Other Comprehensive Income (Loss) |
Total Controlling Stockholders’ Equity |
Total Controlling Stockholders’ Equity
Common Stock
|
Total Controlling Stockholders’ Equity
Mandatory convertible preferred stock
|
Noncontrolling Interest |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Beginning Balances at Dec. 31, 2014 | $ 666,214 | $ 20,495 | $ 0 | $ (170) | $ 666,769 | $ (24,165) | $ (498) | $ 662,431 | $ 3,783 | ||||||||
| Balances (in shares) at Dec. 31, 2014 | 122,046 | ||||||||||||||||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||||||||||||||
| Activity in employees’ stock plans | $ (1,034) | 193 | (1,227) | (1,034) | |||||||||||||
| Activity in employees' stock plans (in shares) | 1,160 | ||||||||||||||||
| Tax benefit increase from stock-based compensation | $ (1,045) | (1,045) | (1,045) | ||||||||||||||
| Amortization of stock-based awards | 8,410 | 8,410 | 8,410 | ||||||||||||||
| Disposal of noncontrolling interest related to sale of joint venture | (1,392) | (1,392) | |||||||||||||||
| Purchase of noncontrolling ownership interest | (6,750) | (3,787) | (3,787) | (2,963) | |||||||||||||
| Comprehensive Income: | |||||||||||||||||
| Net income (loss) | (94,284) | (95,073) | (95,073) | 789 | |||||||||||||
| Other comprehensive income (loss) | (1,607) | (1,390) | (1,390) | (217) | |||||||||||||
| Ending Balances at Dec. 31, 2015 | $ 568,512 | 20,688 | 0 | (170) | 669,120 | (119,238) | (1,888) | 568,512 | 0 | ||||||||
| Balances (in shares) at Dec. 31, 2015 | 123,206 | ||||||||||||||||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||||||||||||||
| Activity in employees’ stock plans | $ (1,156) | 319 | (1,475) | (1,156) | |||||||||||||
| Activity in employees' stock plans (in shares) | 1,912 | ||||||||||||||||
| Amortization of stock-based awards | $ 7,549 | 7,549 | 7,549 | ||||||||||||||
| Comprehensive Income: | |||||||||||||||||
| Net income (loss) | (230,814) | (230,814) | (230,814) | ||||||||||||||
| Other comprehensive income (loss) | (4,956) | (4,956) | (4,956) | ||||||||||||||
| Ending Balances at Dec. 31, 2016 | $ 339,135 | 21,007 | 0 | (170) | 675,194 | (350,052) | (6,844) | 339,135 | 0 | ||||||||
| Balances (in shares) at Dec. 31, 2016 | 125,118 | ||||||||||||||||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | |||||||||||||||||
| Activity in employees’ stock plans | $ (936) | 303 | 0 | (1,239) | (936) | ||||||||||||
| Activity in employees' stock plans (in shares) | 1,818 | ||||||||||||||||
| Amortization of stock-based awards | $ 4,006 | 4,006 | 4,006 | ||||||||||||||
| Issuance of common stock and issuance of mandatory convertible preferred stock | 72,300 | $ 24,059 | $ 48,277 | $ 2,000 | $ 500 | $ 22,059 | $ 47,777 | $ 24,059 | $ 48,277 | ||||||||
| Issuance of common stock and issuance of mandatory convertible preferred stock (in shares) | 12,000 | 500 | |||||||||||||||
| Mandatory convertible preferred stock dividend | (3,051) | (3,051) | (3,051) | ||||||||||||||
| Comprehensive Income: | |||||||||||||||||
| Net income (loss) | (118,701) | (118,701) | (118,701) | ||||||||||||||
| Other comprehensive income (loss) | 3,332 | 3,332 | 3,332 | ||||||||||||||
| Ending Balances at Dec. 31, 2017 | $ 296,121 | $ 23,310 | $ 500 | $ (170) | $ 744,746 | $ (468,753) | $ (3,512) | $ 296,121 | $ 0 | ||||||||
| Balances (in shares) at Dec. 31, 2017 | 139,436 |